from tkinter import*
x=int(input("Введите начльньую кординату x"))
y=int(input("Введите начльньую кординату y"))
n=int(input("Ведите на сколько хотите увеличить "))
coords=[0,0,10,0,10,10,20,10,20,0,30,0,30,20,0,20]
if n == 0 and x>=0 and x<=500 and y>=0 and y<=500:
    pass
else:
    if n > 0 and 0*n+x>=0 and 0*n+y>=0 and 20*n+y<=500 and 20*n+y<=500:
         pass        
    else:
            if n < 0 and 30*n+x>=0 and 20*n+y>=0 and 0*n+x<=500 and 0*n+y<=500:
                pass
            else:
                print("слишком много")
                exit()
root = Tk ()
root.geometry("500x500")
canvas = Canvas (bg= "white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
canvas.create_polygon(coords[0] *n+x,coords[1]*n+y,
                      coords[2] *n+x,coords[3]*n+y,
                      coords[4] *n+x,coords[5]*n+y,
                      coords[6] *n+x,coords[7]*n+y,
                      coords[8] *n+x,coords[9]*n+y,
                      coords[10] *n+x,coords[11]*n+y,
                      coords[12] *n+x,coords[13]*n+y,
                      coords[14] *n+x,coords[15]*n+y)
root.mainloop()
